Model: KFN542-8

Assembled Washe Self-locking Nut

Special Features:

Rockwell c scale 40 min and rockwell c scale 45 max washer

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
0.860 inches
Counterbore Diameter
0.546 inches nut and 0.551 inches nut
Overall Height
0.430 inches
Nut Style
Flat with turned up edge
Nut Counterbore Depth
0.087 inches nut and 0.097 inches nut
Width Across Flats
Between 0.553 inches and 0.564 inches
Tempurature Rating
450.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
20
Hardness Rating
Between 39.0 rockwell c and 48.0 rockwell c
Thread Size
0.500 inches
Material
Steel comp 4140 nut or steel comp 4340 nut or steel comp 8740 nut
Material
Steel washer
Material Specification
Mil-s-5626 military specification 1st material response nut or mil-s-5000 military specification 2nd material response nut or mil-s-6049 military specification 3rd material response nut
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 2 federal specification all treatment responses
NSN
5310-01-116-5452
Part Number
KFN542-8
Description
Nut,self-locking,assembled Washe
CAGE
15653

A nut on which has been assembled a nonremovable washer. An integral feature is incorporated for locking on the threads of a mating member.

Part KFN542-8 NSN 5310-01-116-5452

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29736
FIIG:
A021A0
Concept No.:
1
App. Key:
BG
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318160000
  • SITC: 69421
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Nuts of iron or steel

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